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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Let's argue about BC's
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<blockquote data-quote="Jon A" data-source="post: 474874" data-attributes="member: 319"><p>In the weather I've mainly tested in the past, the difference in drop at 750 from a 300 yd zero between a .75 BC bullet and a .800 BC bullet when launched at 3200 fps is only a bit over<strong> one inch.</strong> I don't know what sort of group sizes you're shooting at that range or if you're shooting 10 or 20 shot groups to decipher the fractions of an inch difference you'd get from an error in measurement, but the point is when the variability of your measuring methods greatly exceeds the variability of the value you're trying to measure, you need new methods.</p><p></p><p><strong></strong></p><p><strong>Acutally, if you use G7 BC's they should be right in the same ballpark. Why do you insist on using G1 BC's when you know they are so velocity dependent for these bullets?</strong></p><p><strong></strong></p><p><strong></strong></p><p><strong>An error when converting the data in JBM made it look like they didn't match at first, but they did upon re-entry by others.</strong></p></blockquote><p></p>
[QUOTE="Jon A, post: 474874, member: 319"] In the weather I've mainly tested in the past, the difference in drop at 750 from a 300 yd zero between a .75 BC bullet and a .800 BC bullet when launched at 3200 fps is only a bit over[B] one inch.[/B] I don't know what sort of group sizes you're shooting at that range or if you're shooting 10 or 20 shot groups to decipher the fractions of an inch difference you'd get from an error in measurement, but the point is when the variability of your measuring methods greatly exceeds the variability of the value you're trying to measure, you need new methods. [B] Acutally, if you use G7 BC's they should be right in the same ballpark. Why do you insist on using G1 BC's when you know they are so velocity dependent for these bullets? An error when converting the data in JBM made it look like they didn't match at first, but they did upon re-entry by others.[/b] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Let's argue about BC's
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